One result of the civil wars in Angola and Mozambique was civilian support for rebel groups
The war began in 1977, just about two years after the war that made the country attain its independence
hope this helps
Mesosphere is the layer after stratosphere, which is after troposphere, as seen from Earth in the direction of Space.
It starts at 60 km and ends at 120 km, after which comes the termosphere.
So we're looking for a line that's closest to 100 km, and this is the shortest line, A.